De-identified U.S. Truck Crash Events with Standardized Operational and Environmental Classifications

This dataset contains de-identified U.S. truck crash events derived from the Federal Motor Carrier Safety Administration (FMCSA) Motor Carrier Management Information System (MCMIS). The data has been structurally filtered, reduced, and transformed using a fully deterministic, rule-based process. The transformation standardizes environmental, roadway, vehicle, and operational characteristics into controlled classification codes while preserving original identifiers and outcome variables. The dataset is designed for reproducible analysis, distributional comparison, and structured incident classification. No probabilistic modeling, inference, or causal interpretation is introduced. All outputs are traceable to source data or explicit transformation rules.